aes_ni.h

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/*
* AES using AES-NI instructions
* (C) 2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_AES_NI_H__
#define BOTAN_AES_NI_H__
 
#include <botan/block_cipher.h>
 
namespace Botan {
 
/**
* AES-128 using AES-NI
*/
class BOTAN_DLL AES_128_NI : public Block_Cipher_Fixed_Params<16, 16>
   {
   public:
      size_t parallelism() const { return 4; }
 
      void encrypt_n(const byte in[], byte out[], size_t blocks) const;
      void decrypt_n(const byte in[], byte out[], size_t blocks) const;
 
      void clear();
      std::string name() const { return "AES-128"; }
      BlockCipher* clone() const { return new AES_128_NI; }
 
      AES_128_NI() : EK(44), DK(44) { }
   private:
      void key_schedule(const byte[], size_t);
 
      SecureVector<u32bit> EK, DK;
   };
 
/**
* AES-192 using AES-NI
*/
class BOTAN_DLL AES_192_NI : public Block_Cipher_Fixed_Params<16, 24>
   {
   public:
      size_t parallelism() const { return 4; }
 
      void encrypt_n(const byte in[], byte out[], size_t blocks) const;
      void decrypt_n(const byte in[], byte out[], size_t blocks) const;
 
      void clear();
      std::string name() const { return "AES-192"; }
      BlockCipher* clone() const { return new AES_192_NI; }
 
      AES_192_NI() : EK(52), DK(52) { }
   private:
      void key_schedule(const byte[], size_t);
 
      SecureVector<u32bit> EK, DK;
   };
 
/**
* AES-256 using AES-NI
*/
class BOTAN_DLL AES_256_NI : public Block_Cipher_Fixed_Params<16, 32>
   {
   public:
      size_t parallelism() const { return 4; }
 
      void encrypt_n(const byte in[], byte out[], size_t blocks) const;
      void decrypt_n(const byte in[], byte out[], size_t blocks) const;
 
      void clear();
      std::string name() const { return "AES-256"; }
      BlockCipher* clone() const { return new AES_256_NI; }
 
      AES_256_NI() : EK(60), DK(60) { }
   private:
      void key_schedule(const byte[], size_t);
 
      SecureVector<u32bit> EK, DK;
   };
 
}
 
#endif